US6196584B1 - Initiator for air bag inflator - Google Patents
Initiator for air bag inflator Download PDFInfo
- Publication number
- US6196584B1 US6196584B1 US09/204,005 US20400598A US6196584B1 US 6196584 B1 US6196584 B1 US 6196584B1 US 20400598 A US20400598 A US 20400598A US 6196584 B1 US6196584 B1 US 6196584B1
- Authority
- US
- United States
- Prior art keywords
- container
- charge
- initiator
- ignitable
- primary charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
- F16K13/04—Other constructional types of cut-off apparatus; Arrangements for cutting-off with a breakable closure member
- F16K13/06—Other constructional types of cut-off apparatus; Arrangements for cutting-off with a breakable closure member constructed to be ruptured by an explosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R2021/26029—Ignitors
Definitions
- the present invention relates to an apparatus for inflating an inflatable vehicle occupant protection device, such as an air bag.
- the present invention relates to an initiator for an air bag inflator having a burst disk which is opened by the initiator.
- a known type of inflator for inflating an air bag includes a container in which inflation fluid is stored.
- the container includes a rupturable burst disk.
- the inflator also includes an electrically actuatable initiator for, when actuated, rupturing the burst disk to release inflation fluid to flow into the air bag.
- the initiator typically includes a pyrotechnic material capable of generating combustion products, including hot gases, for rupturing the burst disk.
- Known initiators use a mixture of a metal and a metallic compound (used as the oxidizer) such as boron potassium nitrate or titanium potassium perchlorate. Ignition of such a charge primarily produces heat, hot gases, and a shock wave for rupturing the burst disk.
- the present invention is an apparatus for inflating an inflatable vehicle occupant protection device.
- the apparatus comprises a container defining a chamber.
- the container has a portion which is rupturable to form an opening in the container.
- a quantity of inflation fluid is stored under pressure in the chamber.
- the apparatus also comprises an electrically actuatable initiator connected with the container for rupturing the rupturable portion of the container to enable flow of inflation fluid out of the inflator to inflate the protection device.
- the initiator comprises an ignitable primary charge and electrically energizable means for igniting the primary charge.
- the initiator further comprises a secondary charge ignitable by the primary charge.
- the secondary charge comprises an ignitable metal in solid form which liquefies when ignited by the primary charge.
- the primary charge when ignited generates combustion products under pressure which ignite the secondary charge and direct the liquefied metal into engagement with the rupturable portion of the container to help open the rupturable portion of the container.
- FIG. 1 is a longitudinal sectional view, partially broken away, of an inflator including an initiator constructed in accordance with the present invention
- FIG. 2 is an enlarged view of a portion of the inflator of FIG. 1 including the initiator.
- the present invention relates to an apparatus for inflating an inflatable vehicle occupant protection device, such as an air bag.
- inflatable vehicle occupant protection devices that can be used in accordance with the invention include, for example, inflatable seat belts, inflatable knee bolsters, inflatable head liners or side curtains, and knee bolsters operated by inflatable air bags.
- the present invention relates to an air bag inflator having a burst disk which is opened by an initiator.
- FIG. 1 illustrates an inflator 10 for inflating an inflatable vehicle occupant protection device, or air bag, illustrated schematically at 12 .
- the inflator 10 includes a container 14 .
- the container includes a cylindrical main body portion 16 which is centered on an axis 20 of the inflator 10 .
- the main body portion 16 of the container 14 includes a cylindrical, axially extending side wall 22 and a radially extending end wall 24 .
- the container 14 also includes an end cap or diffuser 30 welded to an open end of the main body portion 16 of the container opposite the end wall 24 .
- the diffuser 30 defines an opening 32 into an initiator chamber 34 in the diffuser 30 .
- the container has a rupturable portion in the form of a burst disk 36 .
- the burst disk 36 is welded to the diffuser 30 .
- a gas outlet opening 38 extends between the initiator chamber 34 and the exterior of the diffuser 30 .
- the container 14 defines a gas storage chamber 40 .
- a quantity of inflation fluid 42 in the form of a combustible mixture of gases is stored under pressure in the chamber 40 .
- the combustible mixture of gases includes primary gas and fuel gas.
- the fuel gas provides heat of combustion which heats the primary gas.
- This mixture of gases may have any suitable composition known in the art, but preferably has a composition in accordance with the invention set forth in U.S. Pat. No. 5,348,344.
- the burst disk 36 blocks flow of the fluid 42 out of the chamber 40 through the opening 32 .
- the inflator 10 could alternatively include structure different than the burst disk 36 and opening 32 , such as a thin-walled portion of the diffuser 30 which is rupturable to provide an opening in the container.
- the inflator 10 includes a metal retainer 44 secured in the diffuser 30 .
- the retainer secures an initiator 50 in position in the inflator 10 .
- the initiator 50 includes a base illustrated schematically at 52 (FIG. 2 ).
- a pair of electrical terminals 54 and 56 extend from the base 52 for engagement by an electrical connector (not shown) of the vehicle.
- a resistive element 60 extends between an inner end portion 62 of the first terminal 54 and an inner end portion 64 of the second terminal 56 .
- the resistive element 60 electrically interconnects the first terminal 54 and the second terminal 56 .
- the resistive element 60 is operative to generate heat when an electric current is passed through the resistive element between the first and second terminals 54 and 56 of the initiator 50 .
- the initiator 50 includes a metal can or cap 70 .
- the cap 70 is a single layer of metal having a cup-shaped configuration including a cylindrical, axially extending side wall 72 and a radially extending end wall 74 .
- the side wall 72 of the cap 70 is centered on the axis 20 .
- the side wall 72 of the cap 70 is sealed to the base 52 of the initiator 50 in a known manner (not shown).
- the resistive element 60 is also disposed in the chamber 80 .
- the primary charge 90 is a quantity of ignitable material.
- the ignitable material is preferably a known pyrotechnic material such as zirconium potassium perchlorate, titanium potassium perchlorate, or boron potassium nitrate, in powder form, which ignites when exposed to the heat generated by the resistive element 60 .
- the cap 70 encloses the ignitable material 90 and maintains the ignitable material in contact with the resistive element 60 .
- the secondary charge 100 is disposed in a layer along the inside of the end wall 74 of the cap 70 . During assembly of the initiator 50 , the secondary charge 100 is placed in the empty cap 70 before the primary charge 90 is placed in the cap. The secondary charge 100 is made and assembled separately from the primary charge 90 . The secondary charge 100 may be pressed or loose powder.
- the secondary charge 100 is thus disposed between the primary charge 90 and the end wall 74 of the cap 70 .
- the end wall 74 of the cap 70 is presented toward the burst disk 36 .
- the secondary charge 100 is thus disposed between the primary charge 90 and the burst disk 36 when the initiator 50 is assembled in the inflator 10 .
- the secondary charge 100 is a quantity of a finely divided active metal used as a fuel and a metal oxide used as an oxidizer (a combination often referred to as “thermite”).
- An “active” metal is any elemental metal which undergoes a strong exothermic reaction in reducing the metal oxide. Active metals include the alkali metals and the alkaline earth metals, among others.
- a preferred active metal is aluminum.
- Other active metals such as magnesium, titanium, or zirconium could be used.
- a preferred oxidizer is iron oxide.
- Other materials such as silicon dioxide, chromium oxide, manganese dioxide, cupric oxide or lead oxide could be used as the oxidizer.
- the first and second electrical terminals 54 and 56 of the initiator are connected with vehicle electric circuitry indicated schematically at 110 including a power source, which is preferably a vehicle battery and/or a capacitor, and a normally open switch.
- the switch is part of a sensor which senses a vehicle condition indicating the occurrence of a collision.
- the collision-indicating condition may comprise, for example, sudden vehicle deceleration that is caused by a collision. If the collision-indicating condition is at or above a predetermined threshold level, it indicates the occurrence of a collision having at least a predetermined threshold level of severity.
- the threshold level of collision severity is a level at which inflation of the air bag 12 or other vehicle occupant protection device is desired to help protect an occupant of the vehicle.
- the switch closes and the initiator 50 is energized electrically.
- An electric current flows between the first and second terminals 54 and 56 of the initiator 50 , through the resistive element 60 .
- the resistive element 60 generates heat, which ignites the primary charge 90 .
- the ignition of the primary charge 90 produces combustion products, including hot gases, and causes an increase in the pressure inside the cap 70 .
- the pressure increase inside the cap 70 causes the cap to rupture.
- the combustion products of the primary charge 90 , and a shock wave travel away from the base 52 and toward the burst disk 36 .
- the combustion products and the shock wave strike the burst disk 36 .
- the secondary charge 100 is ignited by the heat of the primary charge 90 .
- the oxidizer in the secondary charge 100 reacts with the fuel in a combustion reaction.
- the oxidizer is reduced by the fuel, evolving or generating a superheated elemental metal in a liquid form.
- the aluminum and iron oxide are used as the components of the secondary charge 100 , the aluminum reduces the iron oxide, in an exothermic reaction, to form molten iron and aluminum oxide.
- the metal and metal oxide are selected so that the reaction temperature of the reduction reaction between them is high, with a corresponding high calorific output, and the evolved products should have a high volatility (evaporation temperature).
- the molten iron has a temperature typically in the range of 2000-2800° C.
- the molten iron is propelled by the combustion products of the primary charge into engagement with the burst disk 36 .
- the metal may flow, for example, in a small diameter stream of about one eighth of an inch diameter.
- the liquid metal from the secondary charge 100 acts as a projectile and engages the burst disk 36 .
- the burst disk 36 ruptures when it is engaged by the stream of molten metal and by the combustion products of the primary charge.
- the inflation fluid 42 flows through the ruptured burst disk 36 and through the gas outlet opening 38 in the diffuser 30 to inflate the air bag 12 .
- the metal of the secondary charge 100 remains molten, while melting the burst disk 36 , because of the high temperature of the metal (typically about 2000-2,800° C.) and the small thermal mass of the burst disk (typically about 0.5 mm thickness).
- the heat of the molten metal helps to weaken the burst disk 36 to enhance the projectile effect of the flowing metal.
- the molten metal ignites the fuel gas which is part of the inflation fluid 42 in the container 14 .
- the ignition of the fuel gas raises the pressure and temperature of the primary gas in the container 14 . No heat source other than the secondary charge 100 is needed to ignite the fuel gas.
- an elemental metal is used as the secondary charge 100 .
- the secondary charge 100 is provided as a disk or similar structure, and is not mixed or compounded with any other elements or materials such as an oxidizer or other ignitable materials.
- the heat of combustion of the primary charge 90 causes the secondary charge 100 to liquefy.
- the molten metal is propelled as a projectile by the combustion products of the primary charge 90 into engagement with the burst disk 36 , and can help to rupture the burst disk. If there is adequate oxygen present, the elemental metal of the secondary charge 100 will burn rather than melt.
- the inflation fluid in the container might not include a fuel gas, in which case the molten metal of the secondary charge 100 would serve only to rupture the burst disk.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Bags (AREA)
Abstract
Description
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/204,005 US6196584B1 (en) | 1998-12-01 | 1998-12-01 | Initiator for air bag inflator |
DE19954875A DE19954875A1 (en) | 1998-12-01 | 1999-11-15 | Vehicle occupant safety device inflation system, especially for airbag, has electric initiator which produces molten metal to assist opening of tear portion in pressurized inflation medium container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/204,005 US6196584B1 (en) | 1998-12-01 | 1998-12-01 | Initiator for air bag inflator |
Publications (1)
Publication Number | Publication Date |
---|---|
US6196584B1 true US6196584B1 (en) | 2001-03-06 |
Family
ID=22756221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/204,005 Expired - Fee Related US6196584B1 (en) | 1998-12-01 | 1998-12-01 | Initiator for air bag inflator |
Country Status (2)
Country | Link |
---|---|
US (1) | US6196584B1 (en) |
DE (1) | DE19954875A1 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001042047A3 (en) * | 1999-12-09 | 2001-12-13 | Autoliv Asp | Vehicle inflator |
US6338500B1 (en) * | 1999-01-25 | 2002-01-15 | Livbag Snc | Hybrid gas generator provided with an initiator with shaped explosive charge |
US6516726B2 (en) * | 2000-09-15 | 2003-02-11 | Breed Automotive Technology, Inc. | Device for releasing gas from a vessel |
WO2003075115A2 (en) * | 2002-03-07 | 2003-09-12 | Immo Eurich Bock | Initiator |
US20040000617A1 (en) * | 2002-06-26 | 2004-01-01 | Universal Propulsion Company, Inc. | Temperature compensating inflation device |
US20090020992A1 (en) * | 2006-01-12 | 2009-01-22 | Takata-Petri Ag | Gas generator |
US20100019475A1 (en) * | 2004-10-28 | 2010-01-28 | Blackburn Jeffery S | Pressurized gas release mechanism |
US20100175867A1 (en) * | 2009-01-14 | 2010-07-15 | Halliburton Energy Services, Inc. | Well Tools Incorporating Valves Operable by Low Electrical Power Input |
US20100252023A1 (en) * | 2009-04-07 | 2010-10-07 | Ironbridge Technologies, Inc. | Package heating apparatus |
US20110174504A1 (en) * | 2010-01-15 | 2011-07-21 | Halliburton Energy Services, Inc. | Well tools operable via thermal expansion resulting from reactive materials |
US8973657B2 (en) | 2010-12-07 | 2015-03-10 | Halliburton Energy Services, Inc. | Gas generator for pressurizing downhole samples |
US9169705B2 (en) | 2012-10-25 | 2015-10-27 | Halliburton Energy Services, Inc. | Pressure relief-assisted packer |
US9284817B2 (en) | 2013-03-14 | 2016-03-15 | Halliburton Energy Services, Inc. | Dual magnetic sensor actuation assembly |
US9366134B2 (en) | 2013-03-12 | 2016-06-14 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing near-field communication |
US9587486B2 (en) | 2013-02-28 | 2017-03-07 | Halliburton Energy Services, Inc. | Method and apparatus for magnetic pulse signature actuation |
US9752414B2 (en) | 2013-05-31 | 2017-09-05 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing downhole wireless switches |
US10267605B1 (en) * | 2014-09-30 | 2019-04-23 | Reynolds Systems, Inc. | High G-force resistant initiator assembly having an exploding foil initiator |
US10808523B2 (en) | 2014-11-25 | 2020-10-20 | Halliburton Energy Services, Inc. | Wireless activation of wellbore tools |
US10907471B2 (en) | 2013-05-31 | 2021-02-02 | Halliburton Energy Services, Inc. | Wireless activation of wellbore tools |
US20220332278A1 (en) * | 2021-04-19 | 2022-10-20 | Autoliv Asp, Inc. | Initiator for a gas generator of vehicle safety device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10133221A1 (en) * | 2001-07-09 | 2002-10-17 | Trw Airbag Sys Gmbh & Co Kg | Igniter for a gas generator has a charge case made of a readily combustible material to avoid filter blockage |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3306202A (en) | 1964-12-02 | 1967-02-28 | Vincent J Menichelli | Electric initiator |
US3420174A (en) | 1967-09-29 | 1969-01-07 | Us Navy | Pulse sensitive electro-explosive device |
US3822895A (en) | 1970-12-25 | 1974-07-09 | Toyota Motor Co Ltd | Inflatable restraint device for occupants of vehicles and the like |
US4216721A (en) * | 1972-12-22 | 1980-08-12 | The United Stated Of America As Represented By The Secretary Of The Army | Thermite penetrator device (U) |
US4989515A (en) * | 1989-08-08 | 1991-02-05 | The United States Of America As Represented By The United States Department Of Energy | Ignitor with stable low-energy thermite igniting system |
US5044282A (en) * | 1990-10-15 | 1991-09-03 | The United States Of America As Represented By The Secretary Of The Army | Tapered disc and jacketed explosive device for projecting high velocity metal jets |
US5226561A (en) * | 1991-03-01 | 1993-07-13 | Oea, Inc. | Projectile for initiating inflation of a motor vehicle inflatable safety system |
US5263740A (en) | 1991-12-17 | 1993-11-23 | Trw Inc. | Hybrid air bag inflator |
US5344186A (en) * | 1992-12-24 | 1994-09-06 | Trw Vehicle Safety Systems Inc. | Inflator assembly |
US5348344A (en) | 1991-09-18 | 1994-09-20 | Trw Vehicle Safety Systems Inc. | Apparatus for inflating a vehicle occupant restraint using a mixture of gases |
US5403036A (en) * | 1991-09-05 | 1995-04-04 | Trw Inc. | Igniter for an air bag inflator |
US5468015A (en) * | 1994-06-21 | 1995-11-21 | Trw Vehicle Safety Systems Inc. | Apparatus for inflating an inflatable vehicle occupant restraint |
US5518268A (en) * | 1995-06-19 | 1996-05-21 | Morton International, Inc. | Flow-through heat-enhanced hybrid inflator |
US5668345A (en) * | 1995-10-19 | 1997-09-16 | Morton International, Inc. | Airbag inflators employing coated porous substrates |
US5700974A (en) * | 1995-09-25 | 1997-12-23 | Morton International, Inc. | Preparing consolidated thermite compositions |
-
1998
- 1998-12-01 US US09/204,005 patent/US6196584B1/en not_active Expired - Fee Related
-
1999
- 1999-11-15 DE DE19954875A patent/DE19954875A1/en not_active Withdrawn
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3306202A (en) | 1964-12-02 | 1967-02-28 | Vincent J Menichelli | Electric initiator |
US3420174A (en) | 1967-09-29 | 1969-01-07 | Us Navy | Pulse sensitive electro-explosive device |
US3822895A (en) | 1970-12-25 | 1974-07-09 | Toyota Motor Co Ltd | Inflatable restraint device for occupants of vehicles and the like |
US4216721A (en) * | 1972-12-22 | 1980-08-12 | The United Stated Of America As Represented By The Secretary Of The Army | Thermite penetrator device (U) |
US4989515A (en) * | 1989-08-08 | 1991-02-05 | The United States Of America As Represented By The United States Department Of Energy | Ignitor with stable low-energy thermite igniting system |
US5044282A (en) * | 1990-10-15 | 1991-09-03 | The United States Of America As Represented By The Secretary Of The Army | Tapered disc and jacketed explosive device for projecting high velocity metal jets |
US5226561A (en) * | 1991-03-01 | 1993-07-13 | Oea, Inc. | Projectile for initiating inflation of a motor vehicle inflatable safety system |
US5403036A (en) * | 1991-09-05 | 1995-04-04 | Trw Inc. | Igniter for an air bag inflator |
US5348344A (en) | 1991-09-18 | 1994-09-20 | Trw Vehicle Safety Systems Inc. | Apparatus for inflating a vehicle occupant restraint using a mixture of gases |
US5263740A (en) | 1991-12-17 | 1993-11-23 | Trw Inc. | Hybrid air bag inflator |
US5344186A (en) * | 1992-12-24 | 1994-09-06 | Trw Vehicle Safety Systems Inc. | Inflator assembly |
US5468015A (en) * | 1994-06-21 | 1995-11-21 | Trw Vehicle Safety Systems Inc. | Apparatus for inflating an inflatable vehicle occupant restraint |
US5518268A (en) * | 1995-06-19 | 1996-05-21 | Morton International, Inc. | Flow-through heat-enhanced hybrid inflator |
US5700974A (en) * | 1995-09-25 | 1997-12-23 | Morton International, Inc. | Preparing consolidated thermite compositions |
US5668345A (en) * | 1995-10-19 | 1997-09-16 | Morton International, Inc. | Airbag inflators employing coated porous substrates |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6338500B1 (en) * | 1999-01-25 | 2002-01-15 | Livbag Snc | Hybrid gas generator provided with an initiator with shaped explosive charge |
WO2001042047A3 (en) * | 1999-12-09 | 2001-12-13 | Autoliv Asp | Vehicle inflator |
US6516726B2 (en) * | 2000-09-15 | 2003-02-11 | Breed Automotive Technology, Inc. | Device for releasing gas from a vessel |
WO2003075115A2 (en) * | 2002-03-07 | 2003-09-12 | Immo Eurich Bock | Initiator |
WO2003075115A3 (en) * | 2002-03-07 | 2004-01-22 | Immo Eurich Bock | Initiator |
US20040000617A1 (en) * | 2002-06-26 | 2004-01-01 | Universal Propulsion Company, Inc. | Temperature compensating inflation device |
US6860205B2 (en) * | 2002-06-26 | 2005-03-01 | Universal Propulsion Company | Temperature compensating inflation device |
US8104791B2 (en) * | 2004-10-28 | 2012-01-31 | Automotive Systems Laboratory, Inc. | Pressurized gas release mechanism |
US20100019475A1 (en) * | 2004-10-28 | 2010-01-28 | Blackburn Jeffery S | Pressurized gas release mechanism |
US20090020992A1 (en) * | 2006-01-12 | 2009-01-22 | Takata-Petri Ag | Gas generator |
US7669893B2 (en) | 2006-01-12 | 2010-03-02 | Takata-Petri Ag | Gas generator |
US9593546B2 (en) | 2009-01-14 | 2017-03-14 | Halliburton Energy Services, Inc. | Well tools incorporating valves operable by low electrical power input |
US8235103B2 (en) | 2009-01-14 | 2012-08-07 | Halliburton Energy Services, Inc. | Well tools incorporating valves operable by low electrical power input |
US20100175867A1 (en) * | 2009-01-14 | 2010-07-15 | Halliburton Energy Services, Inc. | Well Tools Incorporating Valves Operable by Low Electrical Power Input |
US20100252023A1 (en) * | 2009-04-07 | 2010-10-07 | Ironbridge Technologies, Inc. | Package heating apparatus |
US9055841B2 (en) * | 2009-04-07 | 2015-06-16 | Heatgenie, Inc. | Package heating apparatus |
US20110174504A1 (en) * | 2010-01-15 | 2011-07-21 | Halliburton Energy Services, Inc. | Well tools operable via thermal expansion resulting from reactive materials |
US8839871B2 (en) | 2010-01-15 | 2014-09-23 | Halliburton Energy Services, Inc. | Well tools operable via thermal expansion resulting from reactive materials |
US8973657B2 (en) | 2010-12-07 | 2015-03-10 | Halliburton Energy Services, Inc. | Gas generator for pressurizing downhole samples |
US9169705B2 (en) | 2012-10-25 | 2015-10-27 | Halliburton Energy Services, Inc. | Pressure relief-assisted packer |
US9988872B2 (en) | 2012-10-25 | 2018-06-05 | Halliburton Energy Services, Inc. | Pressure relief-assisted packer |
US9587486B2 (en) | 2013-02-28 | 2017-03-07 | Halliburton Energy Services, Inc. | Method and apparatus for magnetic pulse signature actuation |
US10221653B2 (en) | 2013-02-28 | 2019-03-05 | Halliburton Energy Services, Inc. | Method and apparatus for magnetic pulse signature actuation |
US9562429B2 (en) | 2013-03-12 | 2017-02-07 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing near-field communication |
US9587487B2 (en) | 2013-03-12 | 2017-03-07 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing near-field communication |
US9366134B2 (en) | 2013-03-12 | 2016-06-14 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing near-field communication |
US9726009B2 (en) | 2013-03-12 | 2017-08-08 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing near-field communication |
US9982530B2 (en) | 2013-03-12 | 2018-05-29 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing near-field communication |
US9284817B2 (en) | 2013-03-14 | 2016-03-15 | Halliburton Energy Services, Inc. | Dual magnetic sensor actuation assembly |
US9752414B2 (en) | 2013-05-31 | 2017-09-05 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing downhole wireless switches |
US10907471B2 (en) | 2013-05-31 | 2021-02-02 | Halliburton Energy Services, Inc. | Wireless activation of wellbore tools |
US10267605B1 (en) * | 2014-09-30 | 2019-04-23 | Reynolds Systems, Inc. | High G-force resistant initiator assembly having an exploding foil initiator |
US10808523B2 (en) | 2014-11-25 | 2020-10-20 | Halliburton Energy Services, Inc. | Wireless activation of wellbore tools |
US20220332278A1 (en) * | 2021-04-19 | 2022-10-20 | Autoliv Asp, Inc. | Initiator for a gas generator of vehicle safety device |
US11760303B2 (en) * | 2021-04-19 | 2023-09-19 | Autoliv Asp, Inc. | Initiator for a gas generator of vehicle safety device |
Also Published As
Publication number | Publication date |
---|---|
DE19954875A1 (en) | 2000-06-15 |
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